FERREA VALVE SPRING KIT K20C1/ K20C4 HONDA CIVIC TYPE R/ Type S Toyota 4Runner (2025+)

FERREA VALVE SPRING KIT K20C1/ K20C4 HONDA CIVIC TYPE R/ Type S Toyota 4Runner (2025+)FITS: 10th Gen Honda Civic Type R 11th Gen Honda Civic Type R 10th Honda Accord 3rd Gen Acura RDX 5th Gen Acura Integra Type S 2nd Gen Acura TLX The OEM Honda valvetrain can handle bursts to 7000 rpm, but there have been failures with extended periods of continuous RPM at that level. The Ferrea valve spring kit uses a high quality PAC spring. made in the USA. It increases the seat pressure more than 20 psi on the seat to help control valve bounce and

By using the universal transmission cooler

This performance intercooler showed a max increase of up to 17 WHP (12

Koyo bearings are used when camber plate top mount is applied - it depends on car's model

2011 - 2016 Honda Fit (GK5)

Higher capacity DI fuel Pump

Kits come with clutch assembly

What you see is what you get

Imagine if each bend was made of pie cuts

The RV6 front spherical bushings was designed to remove the slop in the front suspension for a more precise driving experience

Manufactured from cold-formed

Pillowball mounts and adjustable camber plates included

If you have a 2025+ Honda Civic Si